MathCanvas: Intrinsic Visual Chain-of-Thought for Multimodal Mathematical Reasoning

Fuente: arXiv
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Autores principales: Shi, Weikang, Yu, Aldrich, Fang, Rongyao, Ren, Houxing, Wang, Ke, Zhou, Aojun, Tian, Changyao, Fu, Xinyu, Hu, Yuxuan, Lu, Zimu, Huang, Linjiang, Liu, Si, Liu, Rui, Li, Hongsheng
Formato: Preprint
Publicado: 2025
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author Shi, Weikang
Yu, Aldrich
Fang, Rongyao
Ren, Houxing
Wang, Ke
Zhou, Aojun
Tian, Changyao
Fu, Xinyu
Hu, Yuxuan
Lu, Zimu
Huang, Linjiang
Liu, Si
Liu, Rui
Li, Hongsheng
author_facet Shi, Weikang
Yu, Aldrich
Fang, Rongyao
Ren, Houxing
Wang, Ke
Zhou, Aojun
Tian, Changyao
Fu, Xinyu
Hu, Yuxuan
Lu, Zimu
Huang, Linjiang
Liu, Si
Liu, Rui
Li, Hongsheng
contents While Large Language Models (LLMs) have excelled in textual reasoning, they struggle with mathematical domains like geometry that intrinsically rely on visual aids. Existing approaches to Visual Chain-of-Thought (VCoT) are often limited by rigid external tools or fail to generate the high-fidelity, strategically-timed diagrams necessary for complex problem-solving. To bridge this gap, we introduce MathCanvas, a comprehensive framework designed to endow unified Large Multimodal Models (LMMs) with intrinsic VCoT capabilities for mathematics. Our approach consists of two phases. First, a Visual Manipulation stage pre-trains the model on a novel 15.2M-pair corpus, comprising 10M caption-to-diagram pairs (MathCanvas-Imagen) and 5.2M step-by-step editing trajectories (MathCanvas-Edit), to master diagram generation and editing. Second, a Strategic Visual-Aided Reasoning stage fine-tunes the model on MathCanvas-Instruct, a new 219K-example dataset of interleaved visual-textual reasoning paths, teaching it when and how to leverage visual aids. To facilitate rigorous evaluation, we introduce MathCanvas-Bench, a challenging benchmark with 3K problems that require models to produce interleaved visual-textual solutions. Our model, BAGEL-Canvas, trained under this framework, achieves an 86% relative improvement over strong LMM baselines on MathCanvas-Bench, demonstrating excellent generalization to other public math benchmarks. Our work provides a complete toolkit-framework, datasets, and benchmark-to unlock complex, human-like visual-aided reasoning in LMMs. Project Page: https://mathcanvas.github.io/
format Preprint
id arxiv_https___arxiv_org_abs_2510_14958
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle MathCanvas: Intrinsic Visual Chain-of-Thought for Multimodal Mathematical Reasoning
Shi, Weikang
Yu, Aldrich
Fang, Rongyao
Ren, Houxing
Wang, Ke
Zhou, Aojun
Tian, Changyao
Fu, Xinyu
Hu, Yuxuan
Lu, Zimu
Huang, Linjiang
Liu, Si
Liu, Rui
Li, Hongsheng
Computer Vision and Pattern Recognition
Computation and Language
While Large Language Models (LLMs) have excelled in textual reasoning, they struggle with mathematical domains like geometry that intrinsically rely on visual aids. Existing approaches to Visual Chain-of-Thought (VCoT) are often limited by rigid external tools or fail to generate the high-fidelity, strategically-timed diagrams necessary for complex problem-solving. To bridge this gap, we introduce MathCanvas, a comprehensive framework designed to endow unified Large Multimodal Models (LMMs) with intrinsic VCoT capabilities for mathematics. Our approach consists of two phases. First, a Visual Manipulation stage pre-trains the model on a novel 15.2M-pair corpus, comprising 10M caption-to-diagram pairs (MathCanvas-Imagen) and 5.2M step-by-step editing trajectories (MathCanvas-Edit), to master diagram generation and editing. Second, a Strategic Visual-Aided Reasoning stage fine-tunes the model on MathCanvas-Instruct, a new 219K-example dataset of interleaved visual-textual reasoning paths, teaching it when and how to leverage visual aids. To facilitate rigorous evaluation, we introduce MathCanvas-Bench, a challenging benchmark with 3K problems that require models to produce interleaved visual-textual solutions. Our model, BAGEL-Canvas, trained under this framework, achieves an 86% relative improvement over strong LMM baselines on MathCanvas-Bench, demonstrating excellent generalization to other public math benchmarks. Our work provides a complete toolkit-framework, datasets, and benchmark-to unlock complex, human-like visual-aided reasoning in LMMs. Project Page: https://mathcanvas.github.io/
title MathCanvas: Intrinsic Visual Chain-of-Thought for Multimodal Mathematical Reasoning
topic Computer Vision and Pattern Recognition
Computation and Language
url https://arxiv.org/abs/2510.14958